Wondering if anyone can help. Just picked up my Phantom 4 a couple of weeks ago and did the firmware update successfully (aircraft and RC). My first two flights were great. They were flawless with soft landings. Then it sat for a couple of weeks while I flew my Inspires and P3P. Today I charged up the battery and did an IMU calibration successfully then wanted to check the motors without the propellers attached. When I started the motors the RC started beeping rapidly and would not stop until I turned off the motors. There are no warnings anywhere in the go app and all lights on the aircraft and RC are normal. The status screen in the go app show everything is normal. Does anyone have any thoughts or suggestions?